Arizona is inspired to fix things after witnessing how devastated Callie is about losing custody of Sofia, and breaking up with Penny. She surprises Callie by bringing Sofia over, and giving Callie two plane tickets to New York. Arizona makes it clear that she is willing to share custody, and let Sofia live in New York part of the time. Callie is stunned. "Listen, we did this wrong," Arizona tells her. "We had a chance to do it right and we missed it... I'm saying, Sofia deserves to have two happy moms. I'm saying, let's all be happy." Overjoyed, Callie gives her a big hug. Watch this scene from the Grey's Anatomy Season 12 Finale, "Family Affair," and don't miss Grey's Anatomy THURSDAYS 8|7c on ABC.